Pass task runners to AudioManager constructor.

media/audio/audio_manager_factory_unittest.cc

Index: media/audio/audio_manager_factory_unittest.cc
diff --git a/media/audio/audio_manager_factory_unittest.cc b/media/audio/audio_manager_factory_unittest.cc
index 1d13c2e0269751ce48c34b9ad754823f0145a42f..2c0cccf81010e534450e4dfac4f58d121b6e5fb3 100644
--- a/media/audio/audio_manager_factory_unittest.cc
+++ b/media/audio/audio_manager_factory_unittest.cc
@@ -5,6 +5,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_manager_factory.h"
+#include "media/audio/audio_thread.h"
 #include "media/audio/fake_audio_log_factory.h"
 #include "media/audio/fake_audio_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -20,7 +21,10 @@ class FakeAudioManagerFactory : public AudioManagerFactory {
   AudioManager* CreateInstance(AudioLogFactory* audio_log_factory) override {
     // |created_instance_| is used for verifying. Ownership is transferred to
     // caller.
-    created_instance_ = new FakeAudioManager(audio_log_factory);
+    base::Thread* audio_thread = AudioThread::Get();
+    created_instance_ =
+        new FakeAudioManager(audio_thread->task_runner(),
+                             audio_thread->task_runner(), audio_log_factory);
     return created_instance_;
   }
 
@@ -37,7 +41,7 @@ TEST(AudioManagerFactoryTest, CreateInstance) {
   // Create an audio manager and verify that it is not null.
   scoped_ptr<AudioManager> manager(AudioManager::CreateForTesting());
   ASSERT_NE(nullptr, manager.get());
-  manager.reset();
+  AudioManager::Destroy(manager.release());
 
   // Set the factory. Note that ownership of |factory| is transferred to
   // AudioManager.
@@ -51,8 +55,9 @@ TEST(AudioManagerFactoryTest, CreateInstance) {
   ASSERT_EQ(factory->created_instance(), manager.get());
 
   // Reset AudioManagerFactory to prevent factory from persisting to other
-  // tests on the same process. |manager| will reset when scope exits.
+  // tests on the same process.
   AudioManager::ResetFactoryForTesting();
+  AudioManager::Destroy(manager.release());
 }
 
 }  // namespace media